Sound-box for phonographs.



1. B. WESTENIWER; I SOUND-BOX ron PuQNoenA-ms.

35mm. 19, 191&

)PPLICATION FILED JUNE 1's. i911.

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m v V ATTORNEY,

UNITED STATES PATENT OFFICE.

301m B. wnsrmmavna, or wrIEnLIn-G, wnsr VIRGINIA.

SOUND-BOX FOB rnonoonarns.

Specification of Lettersiatent. Patented Mar. 19, 1918.

Application filed J'nne15, 1917. Serial No. 174,992.

To all whom it may concern:

Be it known that I, JOHN B. Wnsrr.

HAVER, a citizen of the United States, residing at Wheeling, in the county of Ohio and State of West Virginia, have invented certain new and useful Improvements in Soundb1 a e the diaphragm and reproducing needle type.

Another object is to provide a plurahty of diaphragms which are separated from each other in such manner that the sounds from each diaphragm will be independently carried off and mingled at a point remote from the diaphragm.

A further object is to provide a sound box which is perforated adjacent each diaphragm to make the operation of the. latter more eflicient and augmenting the clarity of the projected sound.

,The above and. other objectsand advantages of this invention will be iii part described, and in part understood from the. following description of "the present ferredembodiment,the same being i1 ustrated in-the accompanying drawings, in which Figure 1 is a top plan view, partly in section of a sound box constructed in accordance with my invention.

Fig. 2 is an end elevational view of the same.

Fig. 3 is a vertical sectional view taken on the line 33 of Fig. 1, and

Fig. 4 is a detail top plan fragmentary view of the sound ways used in my invention.

In the drawings a sound box generally designated 1 is provided which consists of a sectional inner shell 2 and an outer sheel 3. The opposite ends of the outer shell are provided with screw threads for engagement with screw threaded caps 4, the latter being provided with central openings, in which the ends of thesound ways or tubes 5 are mounted. It will'benoted that the tubes 5 v join at a point remote from the sound boxi so that the sound carried through the tube tributaries will mingle before being projected into the atmosphere.

A pair of diaphragms 6 made of any suitmaterial, are mounted in rubber rings carried between certain of the sections of the inner shell 2, the adjacent sections being provided with perforations 7 which aline with corresponding perforations in the outer shell 3. Partitions 8 are engaged with the opposite margins of the perforated sections of said inner shell, from that with which the rubber diaphragm engaging ring are in contact, said partitions being, provided with central openings. It will be noted that the I partitions 8 are held in spaced apart relation by one of the sections of the inner shell 2. A sound arm 9 is mounted through the openings of the partitions 8 and has the opposite ends thereof engaged with the diaphragms 6. A stylus bar 10 extends downwardly from the sound arm and is provided with the usual needle holder 11.

In use of the above constructed device, it will be appreciated that sound will be emitted from the opposite ends of the sound box into the tributaries or tubes 5. In view of the partitions 8, the sound is not permitted to'mingle within the sound box 1 so that in this way the sound from each diaphragm will be independently carried oif. Moreover by providing the sections with the perforat1ons 7, accurate and eflicient operation of the diaphragm 6' is insured so as to in no way distort the sound waves.

It will be understood thatv the above de? scription and accompanyingdrawings comprehend only the general and preferred embodiment of my invention and that various minor changes in details of construction, proportion and arrangement of parts may be made within the scope of the appended claim without sacrificing any of the advantages of my invention.

I claim:

A sound box including a cylindrical body the ends of which are equipped with communicating sound conveying tubes, a diaphragm mounted adjacent each end of the" housing, a partition arranged in proximity In testimony whereof I afiix my signature to each diaphragm, said housing being perin presence of two witnesses.

forated between each partition and diaphragm, a sound arm extending through JOHN WESTENHAVER' said partitions and engaged with said dia- Witnesses:

phragms, and a stylus arm depending from W. L. WESTENHAVER, the sound arm. MEY ROBERT Wnr'rn. 

